I am currently using a basic capture card to broadcast gameplay to a computer with OBS. However it always comes out very laggy. Can anyone suggest anything?

What’s the capture card? Does it come out laggy in video preview or only when recording? Can you see if your computer’s resources are getting maxed out? What are your video recording settings in OBS?

We need a lot lore information to further troubleshoot this.

I've done more research and I'm gonna try a few things to see if they work. If not, I'll get back to you with answers to your questions.

OK I've sorted it out